Improved process for bonding rubber to 3m adhesive

Abstract

The application discloses an improved process of bonding rubber and 3M glue, and relates to the technical field of rubber strip production. The improved process specifically comprises the following steps: placing vulcanized rubber lamp strips into an improved drying channel to perform high-temperature baking, evaporating precipitates formed on the surfaces of the rubber lamp strips, and coating 3M base glue and surface glue on the surfaces of the rubber lamp strips. By placing the vulcanized rubber lamp strips into the improved drying channel to perform high-temperature baking, the internal precipitation of the rubber is accelerated, and then the 3M base glue and surface glue are coated, so that the bonding performance is improved, the tensile strength of the whole rubber lamp strip is increased, and the qualified rate is improved.

Description

Technical Field

[0001] This invention relates to the field of adhesive strip manufacturing technology, specifically to an improved process for bonding rubber to 3M adhesive. Background Technology

[0002] Rubber strips are an essential part of the structure of car headlights, which serve to isolate the inside of the headlight from the external environment. If the rubber strip is damaged, the internal environment of the headlight will be disrupted, causing a layer of water mist to adhere to the headlight.

[0003] Existing automotive headlight strips consist of a rubber strip and 3M adhesive. During the production of the rubber strip, after vulcanization, the internal molecules of the rubber precipitate to the surface, forming a layer of precipitate. If the 3M adhesive is directly applied to the rubber surface, the presence of the precipitate significantly reduces the adhesion between the two, causing them to detach over time. To address this, those skilled in the art have proposed an improved process: passing the vulcanized rubber strip through a designed, improved drying tunnel to evaporate the precipitate before applying the 3M adhesive. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides an improved process for bonding rubber to 3M adhesive, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an improved process for bonding rubber to 3M adhesive, comprising:

[0006] The vulcanized rubber light strip is placed in an improved drying tunnel for high-temperature baking to evaporate the precipitates formed on the surface of the rubber light strip. Then, 3M base adhesive and top adhesive are coated on the surface of the rubber light strip.

[0007] Furthermore, the improved drying tunnel includes:

[0008] Several rubber light strips are installed and arranged vertically.

[0009] The oven will form a high-temperature zone inside, and all of the rubber light strips mentioned herein will enter and exit from the same side of the oven;

[0010] A meandering drive module is fixedly installed inside the oven. After several rubber light strips enter the oven, the meandering drive module drives the rubber light strips to move synchronously and in the same direction.

[0011] A hot air module is located on the side of the oven. The hot air module can generate a high-temperature airflow and blow it into the oven to bake several rubber light strips simultaneously.

[0012] Furthermore, one side of the oven is provided with an inlet and an outlet for the synchronous entry and exit of several rubber light strips, and the edges of the inlet and outlet are rounded.

[0013] Furthermore, the meandering drive module includes several hangers installed at the top of the oven interior, with a circulating conveyor belt installed at the bottom of the hangers. Several linkage frames are installed at the drive end of the circulating conveyor belt, and several vertically distributed automatic locking mechanisms are installed on the outside of each linkage frame. The automatic locking mechanisms are capable of elastic deformation.

[0014] Furthermore, the automatic locking mechanisms on the same horizontal plane are in one layer, and each layer of automatic locking mechanisms works together to lock the rubber light strip.

[0015] Furthermore, when the rubber light strip enters the drying oven, in conjunction with the driving of the automatic locking mechanism by the circulating conveyor belt, the rubber light strip is automatically pressed into the automatic locking mechanism as the automatic locking mechanism transitions from an arc trajectory to a straight trajectory.

[0016] When the rubber light strip comes out of the oven, as the automatic locking mechanism transitions from a straight trajectory to an arc trajectory, the rubber light strip automatically disengages from the automatic locking mechanism.

[0017] Furthermore, the automatic locking mechanism includes a base fixed to the surface of the linkage frame, and a locking part is fixedly connected to the end of the base. The locking part is an arc-shaped structure accounting for four-fifths of the circumference. Both ends of the locking part are integrally connected to a tightening part, and the end of the tightening part is integrally connected to an outward expansion part.

[0018] Furthermore, a protective part is fixed inside the engaging part, which can increase the friction between the engaging part and the rubber light strip along the axial direction.

[0019] Furthermore, the hot air module includes a fan and a heating chamber. The outlet of the fan is connected to the inlet of the heating chamber. The outlet of the heating chamber is connected to a diversion pipe. The diversion pipe has three outlets, all of which extend into the interior of the oven and are respectively connected to a unidirectional diversion plate one, a unidirectional diversion plate two, and a bidirectional diversion plate. Diversion holes are opened on the adjacent end faces of the unidirectional diversion plate one and the unidirectional diversion plate two, as well as on both sides of the bidirectional diversion plate. A return pipe is connected between the heating chamber and the oven.

[0020] Furthermore, the first and second unidirectional diverter plates are located on the outer layer of the rubber light strip, while the second bidirectional diverter plate is located on the inner layer of the rubber light strip.

[0021] This invention provides an improved process for bonding rubber to 3M adhesive. Compared with existing technologies, it has the following advantages:

[0022] 1. An improved process for bonding rubber to 3M adhesive involves placing the vulcanized rubber light strip in an improved drying tunnel for high-temperature baking, which accelerates the precipitation and evaporation of the rubber from its interior. Then, 3M base and top adhesives are applied, thereby improving the bonding performance, increasing the tensile strength of the entire rubber light strip, and improving the pass rate.

[0023] 2. The improved process for bonding rubber to 3M adhesive uses an improved drying tunnel that differs from the existing drying tunnel structure and is specifically designed for rubber LED strips, which can significantly improve the evaporation efficiency of substances precipitated on the surface of the rubber LED strip. Attached Figure Description

[0024] Figure 1 This is a perspective view of the improved drying tunnel in this invention from a first-view perspective;

[0025] Figure 2 This is a perspective view of the improved drying tunnel in this invention from a second angle;

[0026] Figure 3 This is a schematic diagram of the structure of the meandering drive module in this invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged view of the structure of section B;

[0028] Figure 5 This is a side view of the improved drying tunnel in this invention;

[0029] Figure 6 This is a side view of the automatic locking mechanism in this invention;

[0030] Figure 7 This is a schematic diagram of the hot air module in this invention;

[0031] Figure 8 For the present invention Figure 5 Sectional view of AA.

[0032] In the diagram: 1. Oven; 11. Inlet; 12. Outlet; 3. Detour-type drive module; 31. Hanger; 32. Circulating conveyor belt; 33. Linkage frame; 34. Automatic locking mechanism; 341. Base; 342. Locking part; 343. Protective part; 344. Tightening part; 345. Outward expansion part; 4. Rubber light strip; 5. Hot air module; 51. Fan; 52. Heating box; 53. Diverter pipe; 54. One-way diverter plate 1; 55. One-way diverter plate 2; 56. Two-way diverter plate; 57. Diverter hole; 58. Return pipe. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1

[0035] This invention provides a technical solution: an improved process for bonding rubber to 3M adhesive, comprising:

[0036] The vulcanized rubber light strip is placed in an improved drying tunnel for high-temperature baking to evaporate the precipitates formed on the surface of the rubber light strip. Then, 3M base adhesive and top adhesive are coated on the surface of the rubber light strip.

[0037] By placing the vulcanized rubber light strip into an improved drying tunnel for high-temperature baking, the internal rubber is accelerated to evaporate, and then 3M base and top adhesives are applied, thereby improving the adhesion performance, increasing the tensile strength of the entire rubber light strip, and improving the pass rate.

[0038] Example 2

[0039] Please see Figure 1 , 2 5. The present invention provides a technical solution: an improved process for bonding rubber to 3M adhesive. The improved drying tunnel includes an oven 1 (one side of the oven 1 is provided with an inlet 11 and an outlet 12 for a number of rubber LED strips 4 to enter and exit synchronously, and the edges of the inlet 11 and outlet 12 are rounded to prevent damage due to friction when the rubber LED strips 4 enter and exit), a detour-type drive module 3, and a hot air module 5. A high-temperature area is formed inside the oven 1. A number of rubber LED strips 4 are provided and are vertically distributed. The rubber LED strips 4 enter and exit from the same side of the oven 1. The detour-type drive module 3 is fixedly installed inside the oven 1. After the rubber LED strips 4 enter the oven 1, they are driven to move synchronously and in the same direction by the detour-type drive module 3. The hot air module 5 is located on the side of the oven 1. The hot air module 5 can generate a high-temperature airflow and blow it into the oven 1 to bake the rubber LED strips 4 synchronously.

[0040] Please see Figure 3 , 4The meandering drive module 3 includes several hangers 31 installed at the top of the oven 1. A circulating conveyor belt 32 is installed at the bottom of the hangers 31. Several linkage frames 33 are installed at the drive end of the circulating conveyor belt 32. Several vertically distributed automatic locking mechanisms 34 are installed on the outside of each linkage frame 33. The automatic locking mechanisms 34 can undergo elastic deformation. The automatic locking mechanisms 34 in the same horizontal plane form a layer. Each layer of automatic locking mechanisms 34 locks the rubber light strip 4 together. When the rubber light strip 4 enters the oven 1, in conjunction with the drive of the circulating conveyor belt 32 on the automatic locking mechanism 34, the rubber light strip 4 is automatically pressed into the automatic locking mechanism 34 as the automatic locking mechanism 34 transitions from an arc trajectory to a straight trajectory. Similarly, when the rubber light strip 4 comes out of the oven 1, the rubber light strip 4 automatically disengages from the automatic locking mechanism 34 as the automatic locking mechanism 34 transitions from a straight trajectory to an arc trajectory.

[0041] Please see Figure 6 The automatic locking mechanism 34 includes a seat 341 fixed to the surface of the linkage frame 33. A locking part 342 is fixedly connected to the end of the seat 341. The locking part 342 is an arc-shaped structure that accounts for four-fifths of the circumference. A tightening part 344 is integrally connected to both ends of the locking part 342. An outward expansion part 345 is integrally connected to the end of the tightening part 344. A protective part 343 is fixed inside the locking part 342. The protective part 343 can improve the friction between the locking part 342 and the rubber light strip 4 along the axial direction.

[0042] Please see Figure 7 , 8 The hot air module 5 includes a fan 51 and a heating box 52. The outlet of the fan 51 is connected to the inlet of the heating box 52. The outlet of the heating box 52 is connected to a diversion pipe 53. The diversion pipe 53 has three outlets, all of which extend into the interior of the oven 1 and are respectively connected to a unidirectional diversion plate 1 54, a unidirectional diversion plate 2 55, and a bidirectional diversion plate 56. Diversion holes 57 are opened on the adjacent end faces of the unidirectional diversion plate 1 54 and the unidirectional diversion plate 2 55 and on both sides of the bidirectional diversion plate 56. The heating box 52 and the oven 1 are connected by a return pipe 58. The unidirectional diversion plate 1 54 and the unidirectional diversion plate 2 55 are located on the outer layer of the rubber light strip 4, and the bidirectional diversion plate 56 is located on the inner layer of the rubber light strip 4.

[0043] In use, several vulcanized rubber light strips 4 are introduced into the oven 1 through inlet 11. The beginning ends of the rubber light strips 4 are pressed into the automatic locking mechanism 34. During pressing, as... Figure 6 As shown, the edge of the rubber light strip 4 contacts the outward expansion portion 345. When the rubber light strip 4 is pressed to the left, it will squeeze the outward expansion portion 345, causing the tightening portion 344 to expand outward until the rubber light strip 4 is squeezed into the engaging portion 342, thus completing the fixation of the beginning of the rubber light strip 4.

[0044] After the initial end is fixed, the circulating conveyor belt 32 is started (this is existing known technology and will not be described in detail here). Taking a top view as an example, the circulating conveyor belt 32 drives the linkage frame 33 to rotate counterclockwise. Under the counterclockwise pulling force, the rubber light strip 4 with the initial end fixed is automatically pulled into the oven 1, and the section of the rubber light strip 4 will automatically engage with the next automatic locking mechanism 34. Similarly, when it is close to the outlet 12, the rubber light strip 4 will also automatically separate from the automatic locking mechanism 34 and come out from the outlet 12, causing the rubber light strip 4 to move continuously. The rubber light strip 4 inside the oven 1 will be affected by the hot air flow generated by the hot air module 5, which will cause the precipitates on the surface of the rubber light strip 4 to evaporate quickly. Furthermore, the one-way diversion plate 1 54, one-way diversion plate 2 55, and two-way diversion plate 56 can improve the evaporation efficiency.

Claims

1. An improved process for bonding rubber to 3M adhesive, characterized in that, include: The vulcanized rubber light strip is placed in an improved drying tunnel for high-temperature baking to evaporate the precipitates formed on the surface of the rubber light strip. Then, 3M base adhesive and top adhesive are coated on the surface of the rubber light strip. The improved drying tunnel includes: Several rubber light strips (4) are provided and are arranged vertically; The oven (1) will form a high-temperature zone inside, and the rubber lamp strips (4) mentioned above will all enter and exit from the same side of the oven (1); The detour-type drive module (3) is fixedly installed inside the oven (1). After the rubber light strips (4) enter the oven (1), the detour-type drive module (3) drives the rubber light strips (4) to move synchronously and in the same direction. A hot air module (5) is set on the side of the oven (1). The hot air module (5) can generate a high-temperature airflow and blow it into the oven (1) to bake several rubber lamp strips (4) simultaneously. The meandering drive module (3) includes several hangers (31) installed at the top of the oven (1). A circulating conveyor belt (32) is installed at the bottom of the several hangers (31). Several linkage frames (33) are installed at the drive end of the circulating conveyor belt (32). Several vertically distributed automatic locking mechanisms (34) are installed on the outside of each linkage frame (33). The automatic locking mechanism (34) can undergo elastic deformation. The automatic locking mechanism (34) includes a seat (341) fixed on the surface of the linkage frame (33). The end of the seat (341) is fixedly connected to a locking part (342). The locking part (342) is an arc-shaped structure that accounts for four-fifths of the circumference. Both ends of the locking part (342) are integrally connected to a tightening part (344), and the end of the tightening part (344) is integrally connected to an outward expansion part (345). The hot air module (5) includes a fan (51) and a heating box (52). The outlet of the fan (51) is connected to the inlet of the heating box (52). The outlet of the heating box (52) is connected to a diversion pipe (53). The diversion pipe (53) has three outlets, all of which extend into the interior of the oven (1) and are respectively connected to a unidirectional diversion plate one (54), a unidirectional diversion plate two (55), and a bidirectional diversion plate (56). The adjacent end faces of the unidirectional diversion plate one (54) and the unidirectional diversion plate two (55) and both sides of the bidirectional diversion plate (56) are provided with diversion holes (57). The heating box (52) and the oven (1) are connected by a return pipe (58).

2. The improved process for bonding rubber to 3M adhesive according to claim 1, characterized in that, The oven (1) has an inlet (11) and an outlet (12) on one side for a number of rubber light strips (4) to enter and exit synchronously, and the edges of the inlet (11) and the outlet (12) are rounded.

3. The improved process for bonding rubber to 3M adhesive according to claim 1, characterized in that, The automatic locking mechanism (34) located on the same horizontal plane is one layer, and the automatic locking mechanism (34) of each layer works together to lock the rubber light strip (4).

4. The improved process for bonding rubber to 3M adhesive according to claim 3, characterized in that, When the rubber light strip (4) enters the oven (1), it is driven by the circulating conveyor belt (32) to the automatic locking mechanism (34). During the transition of the automatic locking mechanism (34) from the arc trajectory to the straight trajectory, the rubber light strip (4) is automatically pressed into the automatic locking mechanism (34). When the rubber light strip (4) comes out of the oven (1), the automatic locking mechanism (34) transitions from a straight trajectory to an arc trajectory, and the rubber light strip (4) automatically disengages from the automatic locking mechanism (34).

5. The improved process for bonding rubber to 3M adhesive according to claim 1, characterized in that, The engaging part (342) has a protective part (343) fixed inside, which can increase the friction between the engaging part (342) and the rubber light strip (4) along the axial direction.

6. The improved process for bonding rubber to 3M adhesive according to claim 1, characterized in that, The first unidirectional diverter plate (54) and the second unidirectional diverter plate (55) are located on the outer layer of the rubber lamp strip (4), and the second bidirectional diverter plate (56) is located on the inner layer of the rubber lamp strip (4).

Images